For the DDL or daedal driver, use the forum search feature, the schematic will pop up for you. You might want to make one small addition to it, namely a resistor of about 470 ohms across the output capacitor. ( the cap near the laser diode in the schematic ) If you are making a bluray in this host, to have enough voltage to run the DDL and bluray diode, use 3 x 10440 lithiums. For a red, 2 x 10440 would be sufficient, with a dummy battery in the third spot. Some builders of reds have put the driver into the spot in the battery holder where the third battery would have been.